Many years ago (in the mid to late 90s), I developed carpal tunnel syndrome. The problem turned out to be the mouse. I tried lots of alternative solutions, and some of them helped, but nothing I tried really solved the problem.

When I started using laptops more frequently (because by then I was doing a lot of consulting, and therefore using laptops), my CTS went away. I figured out it was because of the trackpad.

When I went back to more static computer use with an external monitor, I also made sure to have an external trackpad, and my CTS still has not returned.

These days, I do have a bit of pain issues with my right thumb, and the wrist braces for De Quervain's tenosynovitis are the main thing I have found that will help. But to be honest, at my age, it could just as easily be arthritis. I will check this out with my orthopedist to be sure, but for now the wrist braces work when I have pain.

So, yes -- the Magic Trackpad in particular is a key part of what allows me to continue to work and be a contributing member of society.